| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a magnetic flux measuring instrument and method for stationary induction electric equipment, capable of measuring accurately a magnetic flux without being affected by a direct current off-set component superposed in a measuring system, and capable of measuring continuously the magnetic flux all the time without setting limitation in a measuring period for the magnetic flux. <P>SOLUTION: In this magnetic flux measuring method for measuring the magnetic flux of the stationary induction electric equipment 2, using a voltage waveform of the stationary induction electric equipment 2, the voltage waveform 121 of the stationary induction electric equipment 2 is input into a negative feedback amplification means 14 with a feedback circuit constituted of a low-pass filter, and an output from the negative feedback amplification means 14 is integrated by an integration means 15 to find the magnetic flux 151 of the stationary induction electric equipment 2. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
